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Finding the Fourth Proportional to 145,751.81, 218,133.88 and 89,627.45

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Solution

The fourth proportional to 145,751.81, 218,133.88 and 89,627.45 is: 134,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,751.81 : 218,133.88 = 89,627.45 : x
  2. Step 2: Convert to fraction form
    145,751.81/218,133.88 = 89,627.45/x
  3. Step 3: Cross multiply
    145,751.81x = 218,133.88 × 89,627.45
  4. Step 4: Simplify right side
    145,751.81x = 19,550,782,108.27
  5. Step 5: Solve for x
    x = 19,550,782,108.27/145,751.81
  6. Step 6: Final answer
    x = 134,137.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.